How many different flags can be made from green, white, blue, red, orange, yellow, and purple materials, so each flag consists of three different colors?

Correct answer:

x =  120

Step-by-step explanation:

n=6 x=n(n1)(n2) x=6 5 4=120

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Showing 3 comments:
Dr Math
nice site helped me very much

5 years ago  2 Likes
Math student
This solution is for if the order of color matters. However, according to the question, order does not matter. It is therefore a combination, not a permutation. The solution should be (7x6x5)/3! = 35.

5 years ago  3 Likes
I think solution in OK, because order matters...

5 years ago  2 Likes

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